Reduced-order computational model in nonlinear structural dynamics for structures having numerous local elastic modes in the low-frequency range. Application to fuel assemblies

Autor: Anas Batou, N. Brie, Christian Soize
Přispěvatelé: Laboratoire de Modélisation et Simulation Multi Echelle (MSME), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Marne-la-Vallée (UPEM), EDF R&D (EDF R&D), EDF (EDF), Université Paris-Est Marne-la-Vallée (UPEM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Nuclear and High Energy Physics
Engineering
global elastic modes
reduced-order model
Modal analysis
Structure (category theory)
local elastic modes
02 engineering and technology
Space (mathematics)
01 natural sciences
nonlinear structural dynamics
0203 mechanical engineering
General Materials Science
0101 mathematics
Safety
Risk
Reliability and Quality
fuel assemblies
Waste Management and Disposal
[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]
Basis (linear algebra)
business.industry
Mechanical Engineering
Seismic loading
[SPI.MECA.VIBR]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Vibrations [physics.class-ph]
Structural engineering
Mechanics
[SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]
010101 applied mathematics
Nonlinear system
Range (mathematics)
020303 mechanical engineering & transports
Nuclear Energy and Engineering
A priori and a posteriori
business
Zdroj: Nuclear Engineering and Design
Nuclear Engineering and Design, Elsevier, 2013, 262 (-), pp.276-284. ⟨10.1016/j.nucengdes.2013.04.039⟩
ISSN: 0029-5493
1872-759X
DOI: 10.1016/j.nucengdes.2013.04.039⟩
Popis: International audience; We are interested in the construction of a reduced-order computational model for nonlinear complex dynamical structures which are characterized by the presence of numerous local elastic modes in the low-frequency band. This high modal density makes the use of the classical modal analysis method not suitable. Therefore the reduced-order computational model is constructed using a basis of a space of global displacements, which is constructed a priori and which allows the nonlinear dynamical response of the structure observed on the stiff part to be predicted with a good accuracy. The methodology is applied to a complex industrial structure which is made up of a row of seven fuel assemblies with possibility of collisions between grids and which is submitted to a seismic loading.
Databáze: OpenAIRE
Externí odkaz: